Ruler



FIG. 1 is a front, left, top perspective new of a ruler showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof.

Broken lines are an indication of where the keypad and LCD would be located. 

The ornamental design for ruler, as shown and described. 